automatic updation of excel site from share market

I HAVE ONE TERMINAL CALLED ANGEL BROCKING DIET. THIS SITE IS ONLINE TERMINAL FOR SHARE MARKET. I WANT TO UPDATE AUTOMATICALLY IN TO EXCEL SO THAT I CAN USE SELF MADE FORMULA FOR TECHNICAL MEASURES AND ON WHICH I DECIDE TO BUY OR SALE SHARE IMMEDIATELY.ONE THING I LIKE TO CLEAR THAT IN EXCEL I WANT ONLINE UPDATION WITHOUT REFRESHING IT. CAN IT IS POSSIBLE? AND HOW?